22681436 has 6 divisors (see below), whose sum is σ = 39692520. Its totient is φ = 11340716.

The previous prime is 22681433. The next prime is 22681457. The reversal of 22681436 is 63418622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22681433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2835176 + ... + 2835183.

It is an arithmetic number, because the mean of its divisors is an integer number (6615420).

Almost surely, 2^22681436 is an apocalyptic number.

It is an amenable number.

22681436 is a deficient number, since it is larger than the sum of its proper divisors (17011084).

22681436 is a wasteful number, since it uses less digits than its factorization.

22681436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5670363 (or 5670361 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 22681436 is about 4762.5031233586. The cubic root of 22681436 is about 283.0676127745.

The spelling of 22681436 in words is "twenty-two million, six hundred eighty-one thousand, four hundred thirty-six".